HARKEN MKIV Unit 2 Jib Reefing and Furling System

Designed for performance racing and cruising sailors, these strong, lightweight, aerodynamic systems are built for longevity, ease of use, and simpe installation.

Installation is easy: C-shaped open connectors with low-friction plastic isolators slip onto the headstay wire and into the foil without the need to cut your headstay

Twin grooves for fast sail changes: The foil’s twin grooves and smooth feeder allow fast hoists, douses, and sail changes—ideal for club racing.

Installs over your existing turnbuckle: The drum install over the existing turnbuckle and is adaptable to a variety of rigging options. The Harken toggle assembly accepts standard turnbuckles using swage, rod, Norseman or Sta-Lok terminals, or fits directly to a marine eye and the turnbuckle body is accessible for adjustment by raising the drum.

Other Outstanding Features

• Multiple rows of free-rolling Torlon® ball bearings minimize friction for smooth sailing
• in high-load areas, computer-designed stacked bearing races and large-diameter drums offer smooth reefing and furling.
• Independent head and tack swivels shape the sail when partially furled
• Strong foil joints withstand years of torque loading and are easy to assemble
• Small diameter torque tube with tapered top ensures the furled sail has a smooth, compact shape
• Deep-saturation Hardkote anodized line guard, torque tube and swivels for strength and durability
• Removable split drum comes off easily for racing
• Stainless feeder allows easy hoisting and sail changes
• Double grooves for racing sail changes
• Fits #6 luff tapes

The controlling dimensions for sizing Harken furling systems are headstay wire diameter and clevis pin diameter. Measure your boat’s headstay length to determine whether a standard package has enough foils to build the unit.

• Choose Unit 0 for boats 22’–30′
• Choose Unit 1 for boats 26’–36′
• Choose Unit 2 for boats 36’–46′

MKIV Unit 2 Particulars

• Boat Size: 35’–46′ (10.6’–14.2m)
• Headstay Length: Standard 60’4″ (18.38m); Max. 67’4″ (20.51m)
• Headstay: Wire: 5/16″, 3/8″ (8, 10mm); Rod: -12, 7.14mm, -17, 8.38mm
• Pin Diameter: 5/8″ (15.9mm)
• Headstay Extrusion: Aluminum aerodynamic Air-Foils
• Grooves: Double grooves for racing sail changes
• Drum Material: Hardkote-anodized aluminum; drum cap engineered from super-tough polymer resin
• Head Swivel Material: Hardkote-anodized aluminum
• Attachment Method: Swage, Rod, Norseman® or Sta-Lok® terminals required; toggle flips for fork or tang chainplate installation
• Ball Bearings: Torlon® bearings in high-load areas

How To Order a Harken Furler

Installation Instructions